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Finding the Fourth Proportional to 103,704.25, 143,119.74 and 62,880.25

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Solution

The fourth proportional to 103,704.25, 143,119.74 and 62,880.25 is: 86,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,704.25 : 143,119.74 = 62,880.25 : x
  2. Step 2: Convert to fraction form
    103,704.25/143,119.74 = 62,880.25/x
  3. Step 3: Cross multiply
    103,704.25x = 143,119.74 × 62,880.25
  4. Step 4: Simplify right side
    103,704.25x = 8,999,405,031.14
  5. Step 5: Solve for x
    x = 8,999,405,031.14/103,704.25
  6. Step 6: Final answer
    x = 86,779.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.